best craving repository apparatus maven 2?

some questions answers here boast virtues controlling an craving repository apparatus archiva, artifactory, nexus. pros cons each? i select between them?

in box helps:

• we both maven 1 maven 2 (at slightest while)


• we wish store both internally-generated artifacts, publicly-available ones (ibiblio, codehaus, etc.), exclusive ones (e.g. sun's stable jars servlet api).


• we something runs windows, linux, both.


• we luntbuild the ci server (but intend relocating hudson time).

n.b. doubt register presumably .